Automatic saw-filing device.



F. N. RUSSELL & 0. S. LIND- AUTOMATIC SAW FILING DEVICE.

APPLICATION FILED JULY 15, 19M.

1,144,254. Patented June 22, 1915.

2 SHEETS-SHEET I.

2 s iii 45;; L 1 3 1% 1 1 l mhll ll MI 0 llli- M N/3 I i l o llll WITNESSES INVENTORS f fianiM E1036 6%? 1w o/m s. Lind THE NORRIS PETERS (30.. PHOTO-LITHO WASHINGTON. B, C.

, F. N. RUSSELL & 0. S. LIND.

AUTOMATIC SAW FILING DEVICE.

APPLICATION FILED JULY I5.;I9I4.

Patented June 22, 1915.

2 SHEETS-SHEET 2 WITNESSES THE NORRIS PETFFW 60., PHOTO-LITHOI. WASHINGTON. D.

sans

FRANK N. RUSSELL ANJD OTTO S. LIND, OF CHICAGO, ILLINOIS.

AUTOMATIC SAW-FILING DEVICE.

Specification of Letters Patent.

Patented J line 22, 1915.

Application filed July 15, 1914. Serial No. 851,077.

To all whom it may concern.

Be it known that we, FRANK N. RUssnLL and O'rro S. LIND, citizens of the United States, and residents of Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Automatic Saw-Filing Device, of which the following is a full, clear, and exact description.

Our invention relates to saw files of the automatic type and has reference more particularly to a device comprising a carriage mounted to move parallelly to the edge of the saw provided with teeth and having a saw carrier mounted to reciprocate transversely of the edge at predetermined angles thereto.

An object of the invention is to provide a simple, strong, efiicient and automatic saw filer whereby saws of different pitches and tooth depths can be filed.

WVith the above and other objects in view, the nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawings, forming part of the application, similar characters of reference indicate corresponding parts in all the views, and Figure 1 is an elevation of our saw file; Fig. 2 is an end elevation as seen on line 22, Fig. 1; Fig. 3 is a horizontal section on line 33, Fig. 1; Fig. 4.- is a vertical section on line 14, Fig. 1; Fig. 5 is a vertical section on line 55, Fig. 1; Fig. 6 is a horizontal section on line 66, Fig. 1; and Fig. 7 is a perspective view of the guide for the saw carrier.

1 Referring to the drawings, 8 represents a frame, the parallel standards 9 of which are spaced at the lower end by a transverse beam 10 forming one jaw of a saw clamp. The other jaw 11 of the saw clamp is mounted to move to and from the said fixed jaw 10 in the standards 9. Pivotally mounted in the central part of the movable aw is a han- (110 12. Pivotally connected to the handle 12 at each side of the pivot thereof is a link 13, the free end of the link engaging a notch 14 of the standard, the notches 14 of the standards 9 being substantially in alinement, so that the two links 13 engaging said notches are substantially parallel. The engaging ends of the links 13 are provided with a bevel portion 15 adapted to engage the bottom of the notch, whereby the relative dis;

tance between the movable and the fixed jaws is controlled. By moving the handle 12 (see Fig. 1) toward the left the distance oetween the fixed jaw 10 and the movable aw 11 can be increased to a maximum so that a saw A can be easily inserted thereinto and clamped by moving the handle 12 toward the right.

The standards 9, at the upper ends, are provided with laterally extending portions 16 integral therewith or rigidly secured thereto in any suitable way. Spacing the upper part of the frame is a rod 17 engaging the upper portion of the lateral extension 16 adjacent the standards 9. Rigidly binding the ends of the lateral extensions 16 is a rod 18 forming a rack 19. A saw pitch-control 20 is mounted to rotate in the extension 16 above the rod 18. One end of the saw pitch-control 20 projects outward from the frame 8 and thereat is provided with an an gular head 21 having as many sides as there are difierent pitches on the pitch-control 20. Each side of the head 21 is provided with a notch adapted to be engaged by a pin carried by a member 22 pivotally mounted on the ex tension 16 of the frame. By means of this lever the pitch control is locked in position during the operation of filing the saw.

A carriage 23 is mounted to slide and oscillate on the rod 18. The carriage is in the shape of a rectangular casing through the sides of which the rod 18 passes. Said sides are provided with elongated slots 21 through which the saw pitch-control passes and whereby the carriage is permitted to oscillate on the rod 18. Mounted within the carriage is a link 25, one end of which is pivotally secured to the bottom 26 of the carriage, a pinion 27 being mounted to rotate within the other end of the link 25. The link 25, at its free end, is provided with a lateral projection 28 engaged by one end of a coil spring 29, the other end of which is secured to the side of the carriage, said link under the action of said spring being moved on its pivot toward the rack 19. This brings the pinion 27 into engagement with the rack 19, that is to say, the resilient member 29 tends to maintain the engagement of the pinion 27 with the rack 19.

Meshing with the pinion 27 is a rack 30 suspended to reciprocate. The rack 30 is provided with alining end notches 31 engaged by a link 32 and a portion 33 of a bell prank 34f, said bell crank and link .32 being pivotally connected to the side of the carriage. The bell crank 34 has a bifurcated carriage has been brought to the extreme carriage 23 is oscillated on the rod 18 the rack 30 reciprocates parallel to the base of the carriage, due to the provision of the link 32 which co-acts with the bell crank lever 34.

Mounted adjacent the rear end of the car riage at one side thereof is a pawl or dog 36 adapted to engage spaced notches 37 representing the pitch of the saw. The dog 36 is normally forced against the saw pitchcontrol 20 by a resilient member 38. The dog 36 projects partly through the top of the carriage, so that the same can be manually disengaged from the pitch-control 20. Pivotally connected with one end of the dog 36 is a rod 39 extending to the front end of the carriage, whereat a toe 40 normally engaging the rod 17 is pivotally secured to the rod 39. The toe 40 above the rod is provided with a slot 41 engaged by a pin 42 rigid with the side of the carriage. spring 43 tends to restore the toe 40 to its normal position.

It will be noted that when the carriage 23 is oscillated on the rod 18 and the bottom thereof moves toward the rod 17, the toe 40 will be displaced by the movement and will turn on the pin 42, causing the rod 39 to displace the dog 36, thereby disengaging the dog from one of the notches 37 of the pitch control. As soon as the dog is disengaged from the pitch-control 20, the movement of the rack 30 will cause a displacement of the carriage in the frame 8, due to the engagement of the pinion 27 with the rack 19 under the action of the spring 29. When the dog 36 engages a notch of the pitch-control 20 it prevents displacement of the carriage as the teeth of the pinion 27 move out of the rack 19, leaving the carriage undisturbed. The dog 36 will snap into the following notch as soon as the toe 40 passes the rod 17. The displacement of the toe 40 taking place through a short part of the oscillation of the carriage, the same cannot be moved by the pinion 27 more than through apart of the distance between successive notches of the pitch-control 20. This brings the dog 36 against the pitch-control, ready to snap into av notch as itis continued in its movement by the oscillating movement of the carriage; and as soon as the dog snaps into a notch, the further movement of the carriage is pre vented, although the carriage continues to oscillate upwardly. In the return movement of the carriage, the toe 40 coming in contact with the rod 17 turns on the connection between the rod and the toe, the slot 41 permitting the movement, so that the carriage can be restored to its normal position without operation of the dog 36.

Mounted on the underside of the bottom of the carriage 23 is a plate 44 from which extends a standard or upright 45 passing through the carriage and having a threaded portion engaging a nut at the upper end of the carriage whereby the plate can be bolted to the carriage. The plate is also provided with a series of recesses 46 on an arc the center of which is in the axle of the upright 45, and each of these recesses may be engaged by a pin 47 provided on the underside of the carriage 23. This engagement of the pin with the recesses permits the placing of the plate 44 angular-1y to the bed, and, therefore, at an acute angle to the edge of the saw engaged between the jaws 10 and 11. The plate 44 is provided with under-cut grooves in which slides a file carrier 48. The file carrier 48 is provided at each end thereof with a longitudinally adjustable member 49 controllable by a handle 50. Each of the members 49 has means adapted to receive one end of a file 51, the file being clamped therebetween by means of the handles 50, and by means of said handles the file is moved in the plate 44.

The standards 9 of the frame, above the beam 10 and clamp 11, are each provided with a slot 53 in which a block 52 is mounted to slide. The blocks 52 are carried by members 54 threaded into the standards, whereby the said blocks can be moved relatively to the clamp. This permits a variation of distance between the toothed edge and the carriage. To maintain the edge of the saw parallel to the movement of the carriage 23, the standards 9 are provided with marks (6 adapted to coiiperate with the blocks 52. The stationary jaw 10 is centrally provided with a clamping member 55 whereby the device can be secured to a suitable support, as indicated in Fig. 2.

The operation of the device is as follows: The toothed edge of the saw to be sharpened is clamped in position by moving the handle 12 as far to the right as it can go, as shown in Fig. 1. It is understood that the bloc s 52 have been previously adjusted to bring the teeth of the saw in proper adjustment with the file 51, the pitch-control 20 being moved to have its pitch correspond to the pitch of the saw and locked in the position by means of the member 22'. The carriage 23 is moved to the extreme right (see Fig. 1) by disengaging manually the dog 36 from the pitch-control and by forcing the pinion 27 out of engagement with the rack 19 by means of a pivoted member or latch 56, one end of whichprojects out of the carriage, and the other end may be forced into engagement with the projection 28 provided on the link 25. The latch 56 is pivoted to the bottom of the carriage and a pin 57 is provided at the bottom adapted to engage the latch adjacent the end projecting out of the carriage under the action of the spring which controls the movement of the link,

due to the engagement of the latch with the projection 28, as above stated. After the carriage has been brought to the extreme right position, the file carrier is moved horizontally from the front to the rear, sharpening the teeth of the saw. Reaching the end position of the file carrier, the carriage is rocked or oscillated on the rod 18 by moving the front end upward. This movement of the carriage, as previously described, will translate the carriage to the following notch of the pitchcontrol, and it will also free the file 51 from the toothed edge, permitting a return movement of the file carrier 48, which can be lowered in position with the carriage by pressing on the forward handle 50, the carriage being restored to its normal position; and a further movement of the file carrier 48 will sharpen the following tooth similarly directed. The action is repeated until the carriage has reached its extreme left position, when it may be returned to its extreme right position, as previously described,'and the toothed saw edge displaced accordingly. By the provision of the recesses 46 in the plate 44 and the pin 47 in the bottom of the carriage, the position of the saw guiderelatively to the toothed edge can be varied to obtain the difierent' angles which may be required.

From the foregoing description, taken in connection with the accompanying drawings, the advantage of the construction and operation of the device shown will be readily understood by those skilled in the art to which the invention pertains; and while we have described the principle of operation, together with the device which we now consider to be the best embodiment thereof, we desire to have it understood that the device shown is merely illustrative and that such changes maybe made when desired as are within the scope of the appended claims.

Having thus described our invention, we claim as new and desire to secure by Letters Patent:

1. In a device of the class described, a frame, a saw clamp in the frame, a file carrier mounted to reciprocate transversely of the clamp, means associated with the file carrier for oscillating the same transversely of the clamp, means associated with the file carrier for moving it laterally through a predetermined. distance when the same is oscillated, and with means associated with the frame for maintaining the edge of a saw in a plane parallel to the lateral movement of the file carrier.

2. In a device of the class described, a frame, a saw clamp, a carriage mounted to translate parallelly to the clamp and oscillate transversely thereto, means controlling the translation of the carriage operable by the oscillatory movement thereof, a file carrier associated with the carriage and mount ed to be reciprocated thereon transversely of the clamp, and means associated with the frame whereby the distance from the carriage to the clamp can be varied substantially as and for the purpose set forth.

8. In a device of the class described, a frame, a saw clamp therein, a carriage mounted to translate parallelly to the clamp and oscillate transversely thereto, locking means associated with the carriage and normally preventing the translation thereof, means for unlocking the carriage becoming operable by the oscillatory movement of the carriage, means for translating the carriage When the same is unlocked, and a file carrier associated with the carriage and mounted to reciprocate thereon transversely of the clamp.

4. In a device of the class described, a saw clamp, a file carrier mounted to reciprocate transversely of a saw edge in the clamp, means associated with the file carrier for clearing the same from the saw and to move the file carrier laterally while the same is cleared of the saw edge, means controlling the displacement of the carrier, and means for disengaging the carrier from the means controlling its displacement, whereby said carrier can be translated laterally any desired distance.

5. In a device of the class described, a frame, a saw clamp in the frame, a carriage mounted to translate parallelly to the clamp and oscillate transversely thereto, means controlling the translation of the carriage operable by the oscillatory movement thereof, a file carrier associated with the carriage and mounted to be reciprocated thereon transversely of the clamp, and means for adjusting said file carrier on the carriage whereby the angular relation of the file carrier and the saw clamp may be varied.

6. In a device of the class described, a frame, a saw clamp in the frame, a carriage in the frame mounted to translate parallelly to the clamp and oscillate transversely thereto, means controlling the translation of the carriage in the frame operable by the oscillatory movement thereon, a plate mounted to rotate on the carriage, means for maintaining said plate in predetermined positions, and a file carrier associated with the plate and mounted to bereciprocated therein transversely of the clamp.

7. In a device of the-class described, a frame, a saw clamp in the frame, a carriage mounted to translate parallelly to the clamp and oscillate transversely thereto, a saw pitch-control rotatably mounted in the frame and engaged by said carriage, means normally locking the carriage to the pitchcontrol, means for unlocking the carriage from the pitch-control operable by the oscillatory movement of the carriage, means for translating the carriage becoming operable when the carriage is unlocked from the pitch-control, and a file carrier associated with the carriage and mounted to be reciprocated therein transversely of the clamp.

8. I11 a device of the class described, a frame, a saw clamp in the frame, a carriage mounted to translate parallelly to the clamp and oscillate transversely thereto, a varying saw pitch-control rotatably mounted in the frame and engaged by the carriage, means for locking said saw pitch-control in predetermined positions, means normally locking the carriage to the saw pitch-control, means for unlocking the carriage from the saw pitch-control operable by the oscillatory movement of the carriage, means for moving the carriage laterally becoming operable when the carriage is unlocked from the pitch-control during the oscillatory movement of the carriage, and a file carrier associated with the carriage and mounted to be reciprocated thereon transversely of the clamp.

9. In a device of the class described, a frame, a saw clamp in the frame, transverse rods associated with the frame, a carriage engaging said transverse rods and mounted to t 'anslate parallelly to the clamp and oscillate transversely thereto, one of said rods forming the axis of oscillation therefor, said rod having a ratchet portion, a floating pinion in said carriage meshing with said ratchet, resilient means maintaining the engagement of said pinion with said ratchet,

means for rotating said pinion operable by the scillatory movement of the carriage, means normally locking the carriage to another of said rods whereby the movement of the pinion does not affect the carriage, means for unlocking the carriage from the frame becoming operable during the initial movement of the oscillation of the carriage whereby the turning movement of the pinion takes effect and the carriage is displaced laterally'in the frame, and a file carrier associated with the carriage and mounted to be reciprocated thereon transversely of the clamp.

10. In a device of the class described, a frame, a saw clamp in the frame, a carriage associated with the frame, a rack in the frame engaging the carriage and forming therefor the axis of oscillation whereby said carriage can be moved within said frame parallel to the clamp and oscillate transversely thereof, a floating pinion in the carriage, means maintaining a yielding engagement between the pinion and the rack, a bell-crank lever having means engaging the pinion and the frame whereby the pinion is rotated when the carriage is oscillated, means controlling the displacement of the carriage operable by the initial oscillatory movement of the carriage, and a file carrier associated with the carriage and mounted to reciprocate therein transversely of the clamp.

11. In a device of the class described, a frame, a saw clamp in the frame, a rack displaced parallelly to the clamp, a carriage mounted to oscillate on the rack and slide thereon, a pinion in said carriage yieldingly engaging said rack, a bell-crank lever having means in engagement with the pinion and frame whereby said pinion is rotated when the carriage is oscillated, whereby the carriage can be displaced parallelly to the clamp on the rack, a saw pitch-control associated with the carriage, means normally tending to lock the carriage to the pitch con trol, means for unlocking the carriage from the pitch-control becoming operable by the initial oscillatory movement of the carriage, whereby the engagement of the pinion with the rack remains effective and the carriage is translated, and a file carrier associated with the carriage and mounted to be reciprocated thereontransversely of the clamp.

12. In a device of the class described, a frame, a saw clamp in the frame, a carriage mounted to translate parallelly to the clamp and oscillate transversely thereto, a varying saw pitch-control rotatably mounted in the frame and engaged by the carriage, a pawl mounted in the carriage adjacent said pitchcontrol, a resilient member forcing said pawl into engagement with said saw pitchcontrol, means for forcing said pawl away from said saw pitch-control actuated by the initial oscillatory movement of the carriage, means for moving the carriage laterally becoming operable when the carriage is unlocked from the pitch control during the oscillatory movement of the carriage, and a file carrier associated with the carriage and mounted to be reciprocated thereon transversely of the clamp.

13. In a device of the class described, a frame, a saw clamp in the frame, a carriage mounted to translate parallelly to the clamp and oscillate transversely thereto, a rod having a series of notches representing various saw pitches mounted to. rotate in the frame and engaged by the carriage, means for locking said rod in predetermined positions, a pawl carried by the carriage adapted to engage said notches of the rod, a resilient member normally tending to force the pawl into engagement with'the notches of the rod, means for forcing the pawl out of the notches of the rod operable by the initial oscillatory movement of the carriage, means for moving the carriage parallel to the clamp becoming operable when the carriage is unlocked from the pitch control, and a file carrier associated with the carriage mounted to be reciprocated thereon transversely of the clamp.

14:. In a device of the class described, a i?) frame, a saw clamp in the frame, a carriage mounted to translate parallelly to the frame and oscillate transversely thereto, a varying saw pitch-control rotatably mounted in the frame and engaged by the carriage, means for locking the pitch-control in predetermined positions, means normally locking the carriage to the saw pitch-control, means on the carriage adapted to engage the frame effectively during the initial oscillatory movement of the carriage whereby the carriage is unlocked from the saw pitch-control, yielding means for moving the carriage laterally becoming operable when the carriage is unlocked from the pitch control, and a file carrier associated with the carriage and mounted to be reciprocated thereon transversely of the clamp.

15. In a device of the class described, a frame, a saw clamp in the frame, a rod in alinement with said clamp and parallel thereto, a rack in the frame facing said rod, a varying saw pitch-control mounted in the frame above said rack, a carriage mounted to oscillate on the rack and engage said pitch-control, a pinion in said carriage yield ingly engaging said rack, a second rack sus pended in the carriage meshing with said pinion, means connecting said second rack to the rod above the clamp whereby the same is moved to and fro when said carriage is oscillated on the first-mentioned rack, a pawl normally tending to lock the carriage to the pitch-control, a rod in the carriage from the pawl to the rod above the clamp, a movable toe on the rod leading from the pawl, said toe adapted to engage said rod above the clamp, said engagement of the toe with the rod being such that the pawl is displaced only by the initial oscillatory movement of the carriage, and a file carrier associated with the carriage and mounted to be reciprocated transversely of the clamp.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

FRANK Ni RUSSELL. OTTO S. LIND.

Witnesses:

CHARLES M. FORBES, B. P. J ONES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

